pincushion cactus flowers, mammillaria grahamii, fort bowie national historic site, arizona

flower plant wildflower cactus nature petal garden thorns blossom shrub grass pincushion flowers mammillaria grahamii fort bowie national historic site arizona bright magenta southwest desert usa large blossoms bloom natural environment park outdoors arid dry sonoran color colorful colourful colour stems spikes needles north america united states southwestern west western petals spring may yellow green vibrant vegetation flora